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<h2>FIL</h2>
<p>The FIL structure (file object) holds state of an open file. It is initialzed by f_open function and discarded by f_close function. There is no member that can be changed by the application program.</p>

<pre>
typedef struct _FIL_ {
    FATFS*  fs;         /* Pointer to the owner file system object */
    WORD    id;         /* Owner file system mount ID */
    BYTE    flag;       /* File status flags */
    BYTE    csect;      /* Sector address in the cluster */
    DWORD   fptr;       /* File R/W pointer */
    DWORD   fsize;      /* File size */
    DWORD   org_clust;  /* File start cluster */
    DWORD   curr_clust; /* Current cluster */
    DWORD   dsect;      /* Current data sector */
#if !_FS_READONLY
    DWORD   dir_sect;   /* Sector containing the directory entry */
    BYTE*   dir_ptr;    /* Ponter to the directory entry in the window */
#endif
#if !_FS_TINY
    BYTE    buf[_MAX_SS];/* File R/W buffer */
#endif
} FIL;
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